Donald Trump loves talking politics – and going after politicians. One of his targets was none other than the President of the United States, Barack Obama, who Trump diligently claimed was not born in the United States, despite the White House releasing his birth certificate!

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Mel Gibson and legendary screenwriter Joel Eszterhas faced off in 2012 after collaborating on The Maccabees together. After slamming each other on the internet, Gibson ended up apologizing, while Eszterhas wrote an eBook about the incident.

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Michael and Dina Lohan are not your average divorced couple! Years after parting ways, they continue to slam each other publically, pointing out each others parental flaws.

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Charlie Sheen isn’t afraid to go to war with anyone, but he really blasted Two and a Half Men creator Chuck Lorre after getting out of rehab in 2011. After blasting him for everything from his religion to him living not living in a gated community, Sheen was eventually fired from the show.

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Chelsea Handler has made it no secret that she can’t stand Angelina Jolie! The talk show host, who is pals with Brad Pitt’s ex-wife Jennifer Aniston, has slammed her several times in the press, but Jolie hasnever commented on the feud. “She seems like a demon,” she explained on Watch What Happens Live. “It has nothing to do with Jennifer. As a woman, I know when you see somebody walking across the room that’s a bad girl. I just don’t like Angelina Jolie. I don’t think she’s a girl’s girl. I like girl’s girls.”

Teresa Giudice and Jacqueline Laurita are constantly at odds on The Real Housewives of New Jersey! Jacqueline has accused Teresa of being fake and stabbing her in the back, and after she revealed that her son had autism, she was beyond hurt that Teresa never even called her, but only text messaged her, about it.

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Alec Baldwin and Kim Basinger seemed like a match made in Hollywood heaven, until they went their separate ways and headed for divorce court in 2001. Their battles didn’t end when their divorce was finalized, however, and after years of fighting over custody of their daughter, Ireland, things got really heated when a voicemail that Baldwin left for his daughter, who was 11 at the time, calling her a “rude, thoughtless little pig,” was leaked onto the internet.

Ramona Singer and Aviva Drescher are arch enemies on Real Housewives of New York. The dueling blondes have engaged in raging fights on the show, with the duo each claiming the other has stabbed them in the back and betrayed them in every way possible.

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Paula Deen Vs. Anthony Bourdain: Celebrity chefs went to war in 2011, when Bourdain slammed Deen, calling her “the worst, most dangerous person in the world,” because of her high calorie recipes

Brandi Glanville and Kyle Richards are constantly battling on The Real Housewives of Beverly Hills and on Twitter. After Kyle got entangled in Brandi and Adrienne’s arguments, she and Brandi started their own battles, with Kyle’s husband Mauricio even getting involved and slamming Glanville for creating unnecessary drama.

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Taylor Swift was blindsided at the 2013 Golden Globes, when she was totally slammed by Tina Fey and Amy Poehler. The country star brought the incident up with Vanity Fair, telling the magazine that “there’s a special place in hell for women who don’t help out other women.” Fey and Poehler attempted to apologize, claiming the whole thing was a joke.

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Christina Aguilera and Kelly Osbourne have been entangled in a “fat feud” for several years, with Kelly unwilling to relent on the singer. Osbourne claimed that Aguilera threw the first punch, calling her fat several years ago, and went on to attack her on Fashion Police in 2011. “Maybe she's just becoming the fat b***h she was always born to be. I don't know. She was a c*** to me. She called me fat for so many f**king years, so you know what? F**k you, you're fat too!” Kelly spat on the show after seeing an image of the pop star on the red carpet. Though Aguilera never responded to Osbourne, Kelly continued to make comments about her weight to the media. Finally, in 2012, Kelly admitted that Aguilera was“looking way better.”

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After Kim Kardashian soared to fame with her sex tape, her former BFF Paris Hilton slammed her big time, and the duo haven’t been the same ever since. “I would not want [Kim’s butt] – it’s gross!” Paris said about her former friend’s famous booty during a radio show in 2007. “It reminds me of cottage cheese inside a big trash bag.” Though Paris later apologized, the girls never really reclaimed their friendship and Kim ironically took a stab at Paris’ sex tape on her show a few years later. “I’m not Paris,” she said to her mother, when asked if she remembered to bring night vision binoculars to spy on Bruce Jenner.

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Madonna and Gwyneth Paltrow were almost inseparable and gushed over each other every chance they got, until they had a huge falling out in 2010. Though no one really knows what broke up their friendship, the girls have slightly snubbed each other in interviews.

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After Tom Cruise publically criticized Brooke Shields for taking drugs for her postpartum depression, the Blue Lagoon star slammed the open Scientologist.

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Lindsay Lohan slammed Amanda Bynes, after people started striking comparisons between the two stars after Bynes was arrested in September 2012. “Why did I get put in jail and a Nickelodeon star has had NO punishment (s) so far?” Lohan tweeted.

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Despite everything they have in common, Tara Reid recently admitted that she and Lindsay Lohan do not get along, lashing out and calling the Mean Girls star a mean drunk, as well as stating that Lohan should “stop driving.” Apparently the America Pie star felt bad afterwards, tweeting to Lohan some rehab blessings on May 1. “I truly do wish you the best of luck there is no war here. Your [sic] followed by for 4 leaf clovers.”

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Donald Trump has battled with several Hollywood stars,including Rosie O’Donnell. The drastically different celebs have faced off on a variety of issues over the years, including Trump’s decision to let Tara Conner keep her crown after her drug scandal.

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Ever since LeAnn Rimes had an affair with Brandi Glanville’s husband, the duo have been majorly at odds with each other and constantly taking hits at the other in the press and on Twitter.

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What happened when an old diva meets a new diva? Mariah Carey and Nicki Minaj are majorly clashing on the set of American Idol, in one of television’s biggest feuds ever. The drama started during auditions, when Nicki accused Mariah of being a diva. The two continued to take subtle stabs at each other in the press, on the show and also on Twitter. “Why a woman SO successful at her age, is still so INSECURE, and bitter,” Minaj ranted on Twitter about Mariah.

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Taylor Swift and Carrie Underwood have been rumored to be at odds for years. Though they both remained silent on the feud for years, Underwood finally admitted to Allure in that they aren’t pals. “We run into each other at events,” she said. “We’re never in the same place at the same time.”

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2Pac and the Notorious B.I.G. were rap’s biggest stars of the 1990s, and also represented the East Coast vs. West Coast rap wars. Theonetime friends, who trashed each other in their lyrics, started fighting when Tupac accused Biggie of the 1994 robbery and shooting in the lobby of a recording studio. The duo was murdered within a year of each other.

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Drake and Chris Brown are beyond enemies! The rappers, who have trashed each other in songs and thrown down in night clubs, reportedly started feuding over Rihanna, who they have both been romantically linked to. Things culminated in an infamous brawl at New York City’s W.i.P, after Drake reportedly sent a note to Brown that read “I am f***ing the love of your life.” Members of their entourages threw down, with multiple injuries resulting as well as the bar getting trashed.

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Dave Grohl, Kurt Cobain’s former band mate, and Courtney Love have never been friends. The duo have been feuding since the death of the Grunge icon, with Love accusing the Foo Fighter of hitting on her daughter and calling his band “gay” and Grohl blasting back at her for her substance abuse problems.

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After Eminem claimed that he and Mariah Carey had rendezvoused together in his song Superman, the diva denied the claims and the two went to war, slamming each other in songs and interviews.

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Miley Cyrus got into a Twitter feud with Sinead O'Conner after Sinead wrote an open letter to Miley on her website warning her not to "prostitute herself".